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MYSSM01204BENL DATA Sheet
1
DC-DC Converter DATA Sheet
MYSSM01204BENL
1. Features
・Wide input voltage range. (17V~40V)
・Single Output Voltage/High Current(Iout=4.0A)
and Surface Mount Type of Non-insulated DC-DC Converter.
・Ultra small size and low profile.
・High Efficiency product.
・Wide adjustable output voltage by connecting external resistors.
(5.0 to 12.0V)
・On/Off function and short circuit protection is built in.
・
2. Appearance, Dimensions
⑬
a
6.08
b
b
⑨
a a a
b b
MYSSM
01204BEN L
MURATA
□□□□□□
(3.17)
b b b
a a a
①
6.08
④
b
a
b
a
b
12.0 max.
30.2±0.6
<< Top View >>
a
b
a
⑧
Projection of solder
(3.17)
22.0 max.
⑯
a a a
b b b
20.9±0.4
(The soldering part with the case is excluded.)
(3.17)
(3.17)
a=1.0
b=1.54
<< Bottom View >>
Top of pin
0.15 max.
【Unit:mm】
Tolerance ±0.3mm
Toleranc is not accumulated.
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.
2014.2.8
MYSSM01204BENL DATA Sheet
2
2014.2.8
Marking
(1) Manufacturer Parts No.
(2) Manufacturer ID
MYSSM01204BENL
MURATA
(3) Identification Mark
□
(3) Lot No.
■■■■■■
①②③④④④
①Production factory Mark
②Production Year
③Production Month(1,2,3,・・・・・・,9,O,N,D)
④Production Lot No.
○
(4) Pin No.1 Side Marking
Pin Number and Function
Pin No.
Symbol
Function
1,2,3
Vin
Input
4,5,6,7,13,14,15.16
GND
GND
8
VAR
Output voltage adjustment
9
ON/OFF
Remote ON/OFF
10,11,12
Vout
Output
3. Block Diagram
Vout
Vin
1,2,3
10,11,12
VAR
8
13,14,15,16
4,5,6,7
GND
GND
Control Circuit
9
ON/OFF
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2014.2.8
MYSSM01204BENL DATA Sheet
3
4. Environmental Conditions
4 .1 Operating Temperature Range
4 .2 Storage Temperature Range
4 .3 Operating Humidity Range
4 .4 Storage Humidity Range
5. Absolute Maximum Rating
Item
Maximum Input Voltage
ON/OFF
o
o
-10 C ~ +70 C
o
o
-20 C ~ +85 C
10% ~ 85%(No water condenses in any cases.)
5% ~ 90%(No water condenses in any cases.)
Unit
V
V
Absolute Rating
50
Vin
Remarks
※No voltage, no matter how instantaneous, shall be applied beyond the absolute maximum voltage rating to this
product. If you apply any voltage over this limit the product characteristics will deteriorate or the product itself will be
destroyed. Even though it may continue operating for a while after the over-voltage event, its life will likely be
shortened significantly. Reliability and life of the module may degrade similarly if the maximum operating voltage
rating is continuously exceeded. This product is designed to operate within the maximum operating voltage rating
specification.
6. Characteristics
o
6.1 Electrical Characteristics (Ta=25 C)
Value
Item
Condition
Symbol
Min.
Typ.
Max.
+17.0
+24.0
+40.0
VAR=GND
+11.64
+12.00
+12.36
VAR=Open
+4.85
+5.00
+5.15
Unit
V
Input Voltage
Vin
Output Voltage
Vout
Vin=17.0~40.0V
Iout=0~4.0A
Output Current
Iout
Vin=17.0~40.0V
0
-
4.0
A
Ripple Voltage
Vrip
Vin =24.0V, Iout=4.0A
BW=20MHz
-
180
-
mV(p-p)
Efficiency
EFF
Vin =24.0V, Iout=4.0A
-
96
-
%
2.5
-
Vin
-
-
0.5
V
OFF
ON/OFF Voltage
VON/OFF
Vin=17.0~40.0V
V
ON
OPen
Short Circuit Protection
SCP
If output is shorted to GND , DC-DC Converter shall be operated in a hiccup mode.
After the short circuit event has cleared, the output is automatically brought back into
regulation.
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2014.2.8
MYSSM01204BENL DATA Sheet
4
2014.2.8
6. 2 Output Current Derating
Output Current (A)
5.0
4.0
3.0
2.0
1.0
0.0
-10
0
10
20
30
40
50
60
70
80
Ta (℃)
7. Operation in information
7.1 Output Voltage Adjustment
The output voltage can be adjusted ranging by connecting resistors between VAR-pin(8pin) to GND-pin.
The following equation gives the required external-resistor value to adjust the output voltage to Voadj.
It is strictly recommended to evaluate the characteristics of DC-DC Converter at your board conditions.
MYSSM01204BENL
Internal circuit
Vout
11kΩ
VAR pin
9.4kΩ
RVAR=6.6/(Vout-5.0)-0.943(kΩ)
Error amp
RVAR
1.5kΩ
<RVAR calculation example>
Vout [V]
12.0
5.0
Calculated RVAR[Ω]
0
∞
RVAR example
0Ω
Open
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2014.2.8
MYSSM01204BENL DATA Sheet
5
2014.2.8
7.2 ON/OFF control
ON/OFF function
The DC-DC Converter can be inactive by using ON/OFF function.
ON/OFF control method
When ON/OFF-pin(9pin) is connected to Vin
When ON/OFF-pin(9pin) is connected to GND or Open
・・・ Output Voltage=OFF
・・・ Output Voltage=ON
Usage example
MYSSM01204BENL
Vin pin
R1
or
24kΩ
ON/OFF pin
22kΩ
※
R1=10kΩ ~ 100kΩ
8. Reliability
8.1 Humidity
According to JIS-C-0022.
40 土2°C, 90 to 95%RH, 100 hours. Leave for 4 hours at room temperature.
No damage in appearance and no deviation from electrical characteristics (section 6.1.).
8.2 Temperature Cycles
Repeat cycle 5 times. Leave 2 hours at room temp.
No damage in appearance and no deviation from electrical characteristics (section 6.1.).
Step
Condition
Time
1
-40°C±3°C
30 minutes
2
Room Temp.
5-10 minutes
3
+85°C±2°C
30 minutes
4
Room Temp.
5-10 minutes
8.3 Vibration
10 to 55Hz, 1.5mm amplitude (1minute cycle), 1 hour for each of X, Y, Z directions.
No damage in appearance and no deviation from electrical characteristics (section 6.1.).
8.4 Mechanical Shock
20G, 1 time for each X, Y, Z directions.
No damage in appearance and no deviation from electrical characteristics (section 6.1.).
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2014.2.8
MYSSM01204BENL DATA Sheet
6
9. Test Circuit
In the following test circuit, the initial values under item 6.1. should be met.
9.1. General Measure Circuit
MYSSM01204BENL
Vin
+
Vin
ON/OFF
C1
A
Vout
+
VAR
GND
V
Vr
RL
C2
C1 : Conductive Polymer Aluminum Solid Electrolytic Capacitor 100µF/50V
(PCG1C821MCL1GS φ10×L12.7 :nichicon)
C2 : Conductive Polymer Aluminum Solid Electrolytic Capacitor 820µF/16V
(PCG1C102MNL1GS φ10×L12.7 :nichicon)
OR
Aluminum Solid Electrolytic Capacitor 1000µF/16V
(UCL1C102MNL1GS φ10×L13.5 :nichicon)
9.2. Ripple Voltage Measurement Circuit
L
L≦3cm
Ripple Voltmeter or Oscilloscope
Keisokugiken RM-101 equivalent
or Tektronix 460A equivalent
DC-DC
Converter
load
Terminating resistance
Keisokugiken TRC-50F equivalent
Output capacitor
Coaxial cable(1.5D-2V,L=1.5m)
A
:Output Ripple Noise
B :Output Ripple Voltage
B
A
C :Switching cycle
C
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2014.2.8
MYSSM01204BENL DATA Sheet
7
10. Packaging Specification
10.1. Packing Form
These are packed in a tray(See Fig.10-1)
10.2. The number of products in pack specification form
32pcs./tray
If the products have fraction,may not follow this specification.
10.3. Packaging Form
These trays packed products are packaging in a corrugated box altemately.
200
A
14.5
32.0
B'
32.0
B
32.0
300
32.0
283.3
32.0
A-A' Cross-section drawing
32.0
32.0
38.0
A'
44.0
44.0
44.0
34.0
183.3
B-B' Cross-section drawing
Fig.10-1
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2014.2.8
MYSSM01204BENL DATA Sheet
8
11. Production factory
Komatsu Murata Mfg.Co., Ltd.
Kanazu Murata Mfg. Co., Ltd.
Wakura Murata Mfg. Co., Ltd.
Murata Electronics(Thailand).Ltd.
5.15
95
5.10
90
5.05
85
Efficiency [%]
Output Volage [V]
12. Characteristics Data
12.1.Static Electrical Characyeristics
Vin=17V~40V, Vout=5.0V
(Ta=25℃, Cin 50CE220KX×5, Cout= 16CE330KX×4, RVAR=Open)
5.00
80
4.95
75
4.90
70
4.85
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
65
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
Iout [A]
Iout [A]
Vin=17V
Vin=24V
Vin=40V
Fig.12-1-1. Output Voltage vs. Output Current
Vin=17V
Vin=24V
Vin=40V
Fig.12-1-2. Efficiency vs. Output Current
100
Ripple Voltage [mVp-p]
90
80
70
60
50
40
30
20
10
0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
Iout [A]
Vin=16V
Vin=24V
Vin=40V
Fig.12-1-3. Ripple Voltage vs. Output Current
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2014.2.8
MYSSM01204BENL DATA Sheet
9
Vout=12.0V
(Ta=25℃, Cin 50CE220KX×5, Cout= 16CE330KX×4, RVAR=GND)
12.36
100
12.24
95
Efficiency [%]
Output Voltage [V]
Vin=17V~40V,
2014.2.8
12.12
12.00
90
85
11.88
80
11.76
75
11.64
0.0
0.5
1.0
Vin=17V
1.5 2.0
Iout [A]
2.5
Vin=24V
3.0
3.5
Vin=40V
Fig.12-1-4. Output Voltage vs. Output Current
70
0.0
0.5
Vin=17V
1.0
1.5 2.0
Iout [A]
Vin=24V
2.5
3.0
3.5
Vin=40V
Fig.12-1-5. Efficiency vs. Output Current
120
110
Ripple Voltage [mVp-p]
100
90
80
70
60
50
40
30
20
10
0
0.0
0.5
Vin=17V
1.0
1.5 2.0 2.5
Iout [A]
Vin=24V
3.0
3.5
Vin=40V
Fig.12-1-6. Ripple Voltage vs. Output Current
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2014.2.8
MYSSM01204BENL DATA Sheet
10
2014.2.8
12.2.Dynamic Electrical Characyeristics
Vin=17V, Vout=5.0V
(Ta=25℃, Cin 50CE220KX×5, Cout= 16CE330KX×4, RVAR=Open)
Vin(20V/div)
Vin(20V/div)
Vout(2V/div)
Vout(2V/div)
4ms/div
4ms/div
Fig.12-2-1. Start-up Waveform (Io=0A)
Fig.12-2-2. Start-up Waveform (Io=3.5A)
Vin(20V/div)
Vin(20V/div)
ON/OFF(2V/div)
ON/OFF(2V/div)
Vout(2V/div)
Vout(2V/div)
4ms/div
4ms/div
Fig.12-2-3. Start-up Waveform (Io=0A)
Fig.12-2-4. Start-up Waveform (Io=3.5A)
Vout(50mV/div)
Iout(5A/div)
Vout(50mV/div)
Iout(5A/div)
40us/div
40us/div
Fig.12-2-5. Load Transient Response
(Io= 0 → 3.5A)
Fig.12-2-6. Load Transient Response
(Io= 3.5A → 0)
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2014.2.8
MYSSM01204BENL DATA Sheet
11
2014.2.8
Vin=24V, Vout=5.0V
(Ta=25℃, Cin 50CE220KX×5, Cout= 16CE330KX×4, RVAR=Open)
Vin(20V/div)
Vin(20V/div)
Vout(2V/div)
Vout(2V/div)
4ms/div
4ms/div
Fig.12-2-7. Start-up Waveform (Io=0A)
Fig.12-2-8. Start-up Waveform (Io=3.5A)
Vin(20V/div)
Vin(20V/div)
ON/OFF(2V/div)
ON/OFF(2V/div)
Vout(2V/div)
Vout(2V/div)
4ms/div
4ms/div
Fig.12-2-9. Start-up Waveform (Io=0A)
Fig.12-2-10. Start-up Waveform (Io=3.5A)
Vout(50mV/div)
Iout(5A/div)
Vout(50mV/div)
Iout(5A/div)
40us/div
40us/div
Fig.12-2-11. Load Transient Response
(Io= 0 → 3.5A)
Fig.12-2-12. Load Transient Response
(Io= 3.5A → 0)
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2014.2.8
MYSSM01204BENL DATA Sheet
12
Vin=40V, Vout=5.0V
(Ta=25℃, Cin 50CE220KX×5, Cout= 16CE330KX×4, RVAR=Open)
Vin(20V/div)
Vin(20V/div)
Vout(2V/div)
Vout(2V/div)
4ms/div
Fig.12-2-13. Start-up Waveform (Io=0A)
4ms/div
Fig.12-2-14. Start-up Waveform (Io=3.5A)
Vin(20V/div)
Vin(20V/div)
ON/OFF(2V/div)
ON/OFF(2V/div)
Vout(2V/div)
Vout(2V/div)
4ms/div
Fig.12-2-15. Start-up Waveform (Io=0A)
4ms/div
Fig.12-2-16. Start-up Waveform (Io=3.5A)
Vout(50mV/div)
Iout(5A/div)
Vout(50mV/div)
Iout(5A/div)
40us/div
40us/div
Fig.12-2-17. Load Transient Response
(Io= 0 → 3.5A)
Fig.12-2-18. Load Transient Response
(Io= 3.5A → 0)
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2014.2.8
MYSSM01204BENL DATA Sheet
13
Vin=17V, Vout=12.0V
(Ta=25℃, Cin 50CE220KX×5, Cout= 16CE330KX×4, RVAR=GND)
Vin(20V/div)
Vin(20V/div)
Vout(5V/div)
Vout(5V/div)
4ms/div
4ms/div
Fig.12-2-19. Start-up Waveform (Io=0A)
Fig.12-2-20. Start-up Waveform (Io=3.5A)
Vin(20V/div)
Vin(20V/div)
ON/OFF(2V/div)
ON/OFF(2V/div)
Vout(5V/div)
Vout(5V/div)
4ms/div
Fig.12-2-21. Start-up Waveform (Io=0A)
4ms/div
Fig.12-2-22. Start-up Waveform (Io=3.5A)
Vout(100mV/div)
Iout(5A/div)
Vout(100mV/div)
Iout(5A/div)
40us/div
40us/div
Fig.12-2-23. Load Transient Response
(Io= 0 → 3.5A)
Fig.12-2-24. Load Transient Response
(Io= 3.5A → 0)
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2014.2.8
MYSSM01204BENL DATA Sheet
14
Vin=24V, Vout=12.0V
(Ta=25℃, Cin 50CE220KX×5, Cout= 16CE330KX×4, RVAR=GND)
Vin(20V/div)
Vin(20V/div)
Vout(5V/div)
Vout(5V/div)
4ms/div
4ms/div
Fig.12-2-25. Start-up Waveform (Io=0A)
Fig.12-2-26. Start-up Waveform (Io=3.5A)
Vin(20V/div)
Vin(20V/div)
ON/OFF(2V/div)
ON/OFF(2V/div)
Vout(5V/div)
Vout(5V/div)
4ms/div
Fig.12-2-27. Start-up Waveform (Io=0A)
4ms/div
Fig.12-2-28. Start-up Waveform (Io=3.5A)
Vout(100mV/div)
Iout(5A/div)
Vout(100mV/div)
Iout(5A/div)
40us/div
40us/div
Fig.12-2-29. Load Transient Response
(Io= 0 → 3.5A)
Fig.12-2-30. Load Transient Response
(Io= 3.5A → 0)
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2014.2.8
MYSSM01204BENL DATA Sheet
15
Vin=40V, Vout=12.0V
(Ta=25℃, Cin 50CE220KX×5, Cout= 16CE330KX×4, RVAR=GND)
Vin(20V/div)
Vin(20V/div)
Vout(5V/div)
Vout(5V/div)
4ms/div
Fig.12-2-31. Start-up Waveform (Io=0A)
4ms/div
Fig.12-2-32. Start-up Waveform (Io=3.5A)
Vin(20V/div)
Vin(20V/div)
ON/OFF(2V/div)
ON/OFF(2V/div)
Vout(5V/div)
Vout(5V/div)
4ms/div
4ms/div
Fig.12-2-33. Start-up Waveform (Io=0A)
Fig.12-2-34. Start-up Waveform (Io=3.5A)
Vout(100mV/div)
Iout(5A/div)
Vout(100mV/div)
Iout(5A/div)
40us/div
40us/div
Fig.12-2-35. Load Transient Response
(Io= 0 → 3.5A)
Fig.12-2-36. Load Transient Response
(Io= 3.5A → 0)
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2014.2.8
MYSSM01204BENL DATA Sheet
16
13. Mounting Condition
13.1. PCB Land Pattern Recommendation
22.9
20.9
1.0
2.0
16.9
2.0
1.0
32.2
0.94 0.94 0.94 0.93
2.87 1.6 1.6 1.6 1.6
30.2
6.7
0.93 0.94 0.94
1.6 1.6 1.6 2.87
1pin
1.1
18.7
1.1
Area prohibits wirings other than land.
There are wiring coppers or through-hole via at the bottom side of the DC-DC converter.
When you design your PCBs, please be careful not to short the circuit of the DC-DC converter
or PCBs.
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2014.2.8
MYSSM01204BENL DATA Sheet
17
13.2. Recommendable Condition of Soldering
The following profile is recommended for the reflow of this product using Pb-free solder paste (Sn-Ag-Cu).
Method
:
Full convection reflow soldering
Reflow Soldering Profile
JEDEC IPC/JEDEC J-STD-020D
Table 5-2 Classification Reflow Profile
Pb-Free Assembly Large Body
Profile details
Soldering temperature
Soldering time
Heating time
Preheating time
Programming rate
Descending rate
Total soldering time
Times
:
:
:
:
:
:
:
:
245 oC +0/-5 oC
o
30seconds, 240 to 245 C o
60 to 150 seconds, over217 C
o
60o to 120 seconds,150 to 200
C
3 C / sec. Max.,217 to 245 oC
o
6 C / sec. Max.
o
8 minutes Max., 25 to 245 C
1time
o
245 C
o
Parts surface temperature [ C]
o
217 C
200oC
60~150
(seconds
)
150oC
60~120 (seconds)
Times
※Do not vibrate for the products on reflow.
Please need to take care temperature control because mounted parts may come off if the product are left
under the high temperature.
Do not reflow DC-DC converter as follows, because DC-DC converter may fall down from a substrate
during reflowing
Substrate
DC-DC Converter
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2014.2.8
MYSSM01204BENL DATA Sheet
18
14. Notice
2014.2.8
14. 1. Both input-side and output side, please make the wiring loop between plus and minus as small as possible.
The influence of leakage inductance can be reduced.
14. 2. Please design the print pattern of the main circuit as wide and short as possible.
14. 3. Please do not use a connector or a socket for connection with your board of this product.
Electrical performance may be deteriorated the influence of contact resistance.
Please be sure to mount this product with solder.
14. 4. Be sure to provide an appropriate fail-safe function on your product to prevent a second damage that
may be caused by the abnormal function or the failure of our product.
14. 5. Inrush current protection is not a feature of this product.
14. 6. Please connect the input terminal with proper polarity. If you connect wrong polarity, the DC-DC
Converter may be broken. In the case of the DC-DC Converter is damaged, abnormal input current may
flow in, and abnormal overheat of the DC-DC Converter, or some damage of your products may occur.
Please use a diode and a fuse to as following figure.
fuse
diode
+
+
IN
OUT
-
-
+
Load
※Please select diode and fuse after confirming the operation.
14. 7 Cleaning
Please use no-cleaning type flux and do not wash this product.
14. 8 Storage
14.8.1. Please store the products in room where the temperature/humidity is stable and direct sunlight cannot
come in, and use the products within 6 months after delivery.
Please avoid damp and heat or such places where the temperature greatly changes, as water may
condense on this product, and the quality of characteristics may be reduced, and/or be the solderability
may be degraded.
If this product needs to be stored for a long time (more than 1 year), this product may be degraded in
solderability and/or corroded. Please test the solderability of this product regularly.
Baking before reflow process is unnecessary to store the products under 30℃,60%RH or less up to 6
months.
In case the storage condition is over above mentioned, if these are unpacked condition, please bake them
at 125℃±5℃/24hour. If these are packed in a tape, please bake them before soldering at 60℃±5℃
/168hour.
14.8.2. Please do not store this product in places such as :
A dusty place, a place exposed directly to sea breeze, or in an atmosphere containing corrosive gas
(Cl2,NH3,SO2,NOX and so on).
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2014.2.8
MYSSM01204BENL DATA Sheet
19
14. 9 Operational Environment and Operational Conditions
14. 9.1 Operational Environment
The products are not waterproof, chemical-proof or rust-proof.
In order to prevent leakage of electricity and abnormal temperature increase of the products, do not use the
products under the following circumstances:
(1) in an atmosphere containing corrosive gas (Cl2, NH3, SO2, NOX and so on).
(2) in a dusty place.
(3) in a place exposed to direct sunlight.
(4) in such a place where water splashes or in such a humid place where water condenses.
(5) in a place exposed to sea breeze.
(6) in any other places similar to the above (1)through (5).
14. 9.2 Operational Conditions
Please use the products within specified values (power supply, temperature, input, output and load condition,
and so on). Input voltage drop for line impedance, so please make sure that input voltage is included in
specified values.
If you use the products over the specified values, it may break the products, reduce the quality, and even if the
products can endure the condition for short time, it may cause degradation of the reliability.
Also please take care that the external voltage over output voltage of DC-DC Converter does not applies to
output of this DC-DC Converter.
14. 9.3 Note prior to use
If you apply high static electricity, over rated voltage or reverse voltage to the products, it may cause defects in
the products or degrade the reliability.
Please avoid the following items:
(1) over rating power supply, reverse power supply or not-enough connection of 0 V(DC) line.
(2) electrostatic discharge by production line and/or operator.
(3) electrified product by electrostatic induction.
Do not give an excessive mechanical shock..
If you drop the products on the floor, etc., it may occur a crack to the core of inductors and monolithic ceramic
capacitors.
Do not give a strong shock such as a drop in handling.
14. 10 Transportation
If you transport the products, please pack them so that the package will not be damaged by mechanical
vibration or mechanical shock, and please educate and guide a carrier to prevent rough handling.
If you transport the products to overseas (in particular, by sea), it is expected that the transportation
environment will be the worst, so please pack the products, in the package designed on the consideration of
mechanical strength, vibration-resistant and humidity-resistant. The package of the products which Murata
sells in Japan, may not resist over seas transport.
Please consult us if you are to use the Murata package of the products sold in Japan for transport to overseas.
!
Note
1. Murata recommends that customers ensure that the evaluation and testing of these devices are completed
with this product actually assembled on their product.
2. Please contact our main sales office or nearby sales office before using our products for the applications listed
below which require especially high reliability for the prevention of defects which might directly
cause damage to the third party’s life, body or property or this products for any other applications that
described in the above.
①Aircraft equipment
②Aerospace equipment
③Undersea equipment
④Power plant control equipment
⑤Medical equipment
⑥Transportation equipment (vehicles, trains, ships, etc.)
⑦Traffic signal equipment
⑧Disaster prevention /crime prevention equipment
⑨Data-processing equipment
⑩Application of similar complexity and/or reliability requirements to the applications listed in the above.
This DATA Sheet is indicated in Apr. 2011. About the written contents, since changing without a preliminary
announcement for improvement and supply are sometimes stopped, please confirm in case of ordering.
If written contents are unknown, please ask to our main sales office or nearby sales office.
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2014.2.8
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